There is a guy on YouTube, accidentally destroyed his 4 new cells by forgetting the charger on. The cells exceeded 3.7v and started swelling. He forgot to set the charger to the correct voltage, as he was doing first top balance. And I have seen some personally, swelled at prolonged 1C discharge, about 3-5mm each side and split the box. EVE grade B, never charged above 3.55v.I know - but they can get hot and distort hence the idea was to show the ABS can take some punishment.View attachment 877099
This issue was caused by bad installation (of solar), so although rare it can be made to happen - The report concluded that if these had not been LiFepo4, but Lead the effect would have been catastrophic, rather than inconvenient!